Kill the Lights - Chapter 21 part4

Alien civilization invaded, global psionics recovered, and a game against alien civilization was born…

What? All transactions in the game can only use psionic coins?

Can’t you quickly increase your strength without burning a lot of money?

Su Yu smiled while standing beside the world’s largest psionic spring.

I have tens of billions of psionic coins! Are you scared?

…

Ps: There are already 1.6 million words of the old book, and the credibility is guaranteed.

- Description from novelbuddy

This story is set during the end of the Sui Dynasty, a time where multiple powers struggled for supremacy and power.